0001047469-99-038116 4 1 19990930 19991008 F5 NETWORKS INC 0001048695 7373 911714307 WA 0930 4 34 000-26041 99724948 200 FIRST AVE WEST STE 500 SEATTLE WA 98119 2065050800 200 FIRST AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 F5 NETWORKS INC 0001048695 7373 OFFICER 911714307 WA 0930 4 200 FIRST AVE WEST STE 500 SEATTLE WA 98119 2065050800 200 FIRST AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 4 1 000104746999038116-001-seq1-4.txt FORM 4